It occurred to me as I looked at this picture that the pattern recognition required to perceive a the head of leopard behind that grass comes naturally to humans--and would be exceedingly hard for computers. Spotting potential predators hiding in the grass was vital for our ancestors. And even if we spend 99.9% of our days in cities or suburbs, that uncanny ability has been handed down to us.

I should note that a tour guide spotted this animal. We stopped when we saw his halted bus, and he pointed it out to us. So despite our ability to see a leopard through the grass, we probably wouldn't have seen this one on our own. When it comes to some of these survival skills, we're a little rusty.